TRENTON — The New Jersey AFL-CIO said today it had thrown its support behind state Sen. Barbara Buono, the Democratic candidate for governor.

The union president, Charles Wowkanech, said in statement that its delegates voted “overwhelmingly” to back Buono at a conference earlier today in Atlantic City.

“Senator Buono has a consistent and clear record of supporting New Jersey’s working families,” Wowkanech said. “She is the only candidate who understands that in order to grow our economy we need to work from the bottom up – ensuring access to a quality education, family-sustaining jobs, and economic opportunities to achieve a middle-class lifestyle.”

The union also issued legislative endorsements, backing Democrats almost exclusively, and most incumbents. Only one Republican — Assemblyman John Amodeo (R-Atlantic) — won its backing.

One incumbent Democrat not endorsed by the union was state Sen. Brian Stack (D-Hudson), who endorsed Gov. Chris Christie for re-election on Monday. Stack sits in one of the state’s most Democratic districts and does not face serious opposition in November.